I agree, because of my point before. What wheels would he run with five lug and that BIG center hole? I don't think anybody makes anything. So Ford 9" it is. LOL
If he put car ends on the Dana instead of the floater ends hed have easy wheel selection. Or he could call tim McManus for his floater ends, but he might only make them for 9ers. Lol, it seems you might be correct